95 results on '"Kocevski, Daniel"'
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52. Characterization of Glowbug: a gamma-ray telescope for bursts and other transients
53. The Birth of a Relativistic Jet Following the Disruption of a Star by a Cosmological Black Hole
54. Multiwavelength Follow-up of a Rare Icecube Neutrino Multiplet
55. Evaluation of a prototype detector for the LargE Area burst Polarimeter (LEAP)
56. The LargE Area burst Polarimeter (LEAP) – A NASA mission of opportunity for the ISS
57. The Gamow Explorer: a Gamma-Ray Burst Observatory to study the high redshift universe and enable multi-messenger astrophysics
58. Magnetar giant flare in NGC 253 seen by Fermi-GBM
59. The Gamow Explorer: a Gamma-Ray Burst Observatory to study the high redshift universe and enable multi-messenger astrophysics
60. On-orbit performance of Glowbug, a telescope on the ISS for gamma-ray transients
61. The Host Galaxies of Fast-Ejecta Core-Collapse Supernovae
62. BurstCube: a CubeSat for gravitational wave counterparts
63. GRB 160625B: Evidence for a Gaussian-shaped Jet
64. Characterization of Glowbug: a gamma-ray telescope for bursts and other transients
65. No supernovae associated with two long-duration γ-ray bursts
66. Probing Blazar Emission Processes with Optical/Gamma-Ray Flare Correlations
67. A Search for High-energy Counterparts to Fast Radio Bursts
68. On The Lack of Time Dilation Signatures in Gamma-ray Burst Light Curves
69. Evaluation of a prototype detector for the LargE Area burst Polarimeter (LEAP)
70. The 2nd LAT GRB Catalog
71. Exploring the Behaviour of Long Gamma-Ray Bursts with Intrinsic Afterglow Correlations: log L200s−α>200s
72. MODELING THE GRB HOST GALAXY MASS DISTRIBUTION: ARE GRBs UNBIASED TRACERS OF STAR FORMATION?
73. Exploring the Environment of the most powerful Explosions
74. COSMOLOGICAL EVOLUTION OF LONG GAMMA-RAY BURSTS AND THE STAR FORMATION RATE
75. Exploring the Behaviour of Long Gamma-Ray Bursts with Intrinsic Afterglow Correlations: log L200s--α>200s.
76. THE HOST GALAXIES OF FAST-EJECTA CORE-COLLAPSE SUPERNOVAE
77. AN OBSERVED CORRELATION BETWEEN THERMAL AND NON-THERMAL EMISSION IN GAMMA-RAY BURSTS
78. ON THE ORIGIN OF HIGH-ENERGY CORRELATIONS IN GAMMA-RAY BURSTS
79. ON THE ORIGIN OF THE MASS–METALLICITY RELATION FOR GAMMA-RAY BURST HOST GALAXIES
80. Limits on radioactive powered emission associated with a short-hard GRB 070724A in a star-forming galaxy
81. MODELING THE GRB HOST GALAXY MASS DISTRIBUTION: ARE GRBs UNBIASED TRACERS OF STAR FORMATION?
82. GENERALIZED TESTS FOR SELECTION EFFECTS IN GAMMA-RAY BURST HIGH-ENERGY CORRELATIONS
83. Characterization of Glowbug: a gamma-ray telescope for bursts and other transients.
84. Can We Trust GRB High Energy Correlations?
85. A Complete Catalog ofSwiftGamma‐Ray Burst Spectra and Durations: Demise of a Physical Origin for Pre‐SwiftHigh‐Energy Correlations
86. X‐Ray Hardness Variations as an Internal/External Shock Diagnostic
87. Pulse Width Evolution of Late‐Time X‐Ray Flares in Gamma‐Ray Bursts
88. Multicolor Infrared Observations of SN 2006aj. I. The Supernova Associated with XRF 060218
89. X‐Ray Hardness Evolution in GRB Afterglows and Flares: Late‐Time GRB Activity withoutNHVariations
90. ON THE LACK OF TIME DILATION SIGNATURES IN GAMMA-RAY BURST LIGHT CURVES.
91. Gamma-Ray Burst Energetics in the Swift Era
- Abstract
We examine the rest-frame energetics of 76 gamma-ray bursts (GRBs) with known redshift that were detected by the Swift spacecraft and monitored by the satellite's X-Ray Telescope (XRT). Using the bolometric fluence values estimated by Butler and coworkers and the last XRT observation for each event, we set a lower limit to their collimation-corrected energy
!["E_{\gamma]("eq-00001.gif")
Eg and find that 68 !["\%]("eq-00002.gif")
% of our sample is at high enough redshift and/or low enough fluence to accommodate a jet break occurring beyond the last XRT observation and still be consistent with the pre-Swift !["E_{\gamma]("eq-00003.gif")
Eg distribution for long GRBs. We find that relatively few of the X-ray light curves for the remaining events show evidence for late-time decay slopes that are consistent with that expected from post-jet break emission. The breaks in the X-ray light curves that do exist tend to be shallower and occur earlier than the breaks previously observed in optical light curves, yielding a !["E_{\gamma]("eq-00004.gif")
Eg distribution that is far lower than the pre-Swift distribution. If these early X-ray breaks are not due to jet effects, then a small but significant fraction of our sample have lower limits to their collimation-corrected energy that place them well above the pre-Swift !["E_{\gamma]("eq-00005.gif")
Eg distribution. Either scenario would necessitate a much wider post-Swift !["E_{\gamma]("eq-00006.gif")
Eg distribution for long cosmological GRBs compared to the narrow standard energy deduced from pre-Swift observations. We note that almost all of the pre-Swift !["E_{\gamma]("eq-00007.gif")
Eg estimates come from jet breaks detected in the optical whereas our sample is limited entirely to X-ray wavelengths, furthering the suggestion that the assumed achromaticity of jet breaks may not extend to high energies.
92. A Complete Catalog of Swift Gamma-Ray Burst Spectra and Durations: Demise of a Physical Origin for Pre-Swift High-Energy Correlations
93. The Future of Gamma-Ray Experiments in the MeV-EeV Range
94. COSMOLOGICAL EVOLUTION OF LONG GAMMA-RAY BURSTS AND THE STAR FORMATION RATE
95. The host galaxies of fast-ejecta core-collapse supernovae
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